US3385906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cumene
Assignee: Union Carbide Corp
•
Filing: 1965-05-25
•
Granted: 1968-05-28
•
Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Kaufman Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:47
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C15/085; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C6/00; C07C6/08; C07C6/12; C07C6/126; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB791318A
Cited
US2945072A
Cited
US2971903A
Cited
US3173855A
Cited
US3140253A
Cited
US3312615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |